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Tourette's Syndrome is characterized by
multiform, frequently changing motor and phonic tics.
Tics can be defined as involuntary,
rapid, repetitive, and stereotyped movements of individual muscle groups.
Individuals feel a compulsive need to perform a tic which can be
embarrassing and even painful. Although they are said to be involuntary,
affected individuals have some control over these tics but this
often leads to a bout of tics with increased severity. On many occasions the
symptoms of Tourette's Syndrome increase during periods of stress and anxiety.